19.3 Wrap any remaining exposed wiring that was passed through the firewall grommet with fabric tape.
19.4 Route the harness (TSU CT44FRT034) towards the front of the vehicle to the existing plow light connector(s) along the existing harness in the path shown in the Fig. 76, Fig. 77, Fig. 78, Fig. 79, and
Fig. 80. Secure the harness with zip ties as needed.

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f548345

Fig. 77, Harness Path Along the Left-Hand Frame Rail

09/27/2023

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f548344

Fig. 76, Harness Path from the Firewall Towards the
Left-Hand Frame Rail

Page 45

f548346

Fig. 78, Harness Path Over the top of the Left-Hand
Frame Rail Down in Between the Frame Rail and
Radiator

Daimler Truck
North America LLC

Field Service Campaign

October 2023
SF675 A-C

09/27/2023

f548347

Fig. 79, Harness Path

09/27/2023

f548348

Fig. 80, Harness Path to the Plow Connectors (single
connector configuration shown)

Page 46

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Field Service Campaign

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SF675 A-C

19.5 At this point, one of the two types of plow light interface connectors are encountered, either a singleconnector interface, or a dual-connector interface. See Fig. 81 and Fig. 82.

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f548350

Fig. 82, Dual Connector Plow Light Interface (one
connector shown)
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f548349

Fig. 81, Single Connector Plow Light Interface

Page 47

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Field Service Campaign

October 2023
SF675 A-C

NOTE: For dual connector interface, skip the substep 19.6, and go to substep 19.7.
19.6 For single plow
. light connector interface:
• Remove the cover and lock from the single plow light interface connector.
See Fig. 83 and Fig. 84

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f548351

Fig. 83, Single Plow Light Interface Connector with the
Cover Removed

Page 48

09/27/2023

f548352

Fig. 84, Single Plow Light Interface Connector with the
Lock Removed

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Field Service Campaign

October 2023
SF675 A-C

.

• Locate the empty cavity and remove the rubber plug. See Fig. 85
• Cut a length of white 16-gauge wire approximately 24 inches long. On one end of this short
wire, install a terminal (PAC 12110847 L) and seal (PAC 15324984 B). See Fig. 86.

A

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f548354

Fig. 86, 24-inch Length of 16 Gauge Wire with the
Terminal and Seal Crimped on One End

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f548353

A. Remove the rubber plug from the empty cavity.
Fig. 85, Single Plow Light Interface Connector with the
Plug Removed from the Empty Cavity

Page 49

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SF675 A-C

• Insert the wire into the open cavity of the single plow light interface connector, and install the
connector lock. See Fig. 87 and Fig. 88.

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f548355

Fig. 87, Inserting the Wire into the Open Cavity of the
Single Plow Light Connector

Page 50

09/27/2023

f548356

Fig. 88, Installing the Lock on the Single Plow Light
Connector

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October 2023
SF675 A-C
• Splice the two white wires that were routed from the firewall pass-through grommet to the
short wire that was connected to the plow connector in the previous step.
. 89 and Fig. 90
See Fig.
NOTE: Trim the two white wires routed from the firewall pass-through grommet to length as
needed. This includes discarding the terminals that were on the end of these two wires.
NOTE: For wire splices, use one of the methods outlined in Section 54.00, Subjects 100 and
110 of the 47X & 49X Workshop Manual.

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f548358

Fig. 90, Completed Splice

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f548357

Fig. 89, Wires Trimmed to Length as Needed Prior to
Splicing

Page 51

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SF675 A-C

• Wrap any exposed wiring from the plow light connector to the taped portion of the two white
wires routed from the firewall pass-through grommet with fabric tape. See Fig. 91 and Fig. 92.

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f548359

Fig. 91, Wrapping the Exposed Wiring with Fabric Tape

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Fig. 92, Exposed Wiring Wrapped with Fabric Tape

• Secure the harness with zip ties as needed.
NOTE: Leave the connector cover off for testing in a later step.

Page 52

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SF675 A-C

19.7 For dual plow light connector interface:
• Remove the covers from the two plow light interface connectors.
• Remove tape from the from the rubber boot on each of the two connectors. Pull the boot back
away from each of the two connectors to expose the wiring at each connector. See Fig. 93.

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f548361

Fig. 93, Dual Plow Light Connector with the Rubber
Boot Pulled Back to Expose the Wiring and the Cover
Removed (one connector shown)

• Remove the lock from each of the two connectors.
• Remove the plug from the empty cavity in each of the two connectors.
• Route the two white wires that were routed from the firewall pass-through grommet to each of
the two plow light connectors. Be sure the wire marked ‘left’ goes to the driver-side connector
and the wire marked ‘right’ goes to the passenger-side connector.
• Insert the wire marked ‘left’ into the empty cavity of the driver-side plow light connector.
• Insert the wire marked ‘right’ into the empty cavity of the passenger-side plow light connector.
• Install the rubber boot on each plow light connector, and apply tape as needed.
• Wrap any exposed wiring that was routed to the plow light connectors with fabric tape as
needed.
• Secure the wiring with zip ties as needed.
NOTE: Leave the connector covers off for testing in a later step.

Page 53

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SF675 A-C
20. Install the marker light ground wiring.
20.1 Remove the nut from the ground stud on the driver-side frame rail, near the front axle. See Fig. 94 .
20.2 Install the ring terminal from the harness (TSU CT44FRT035) on the ground stud, and install the nut.
See Fig. 95.

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f548362

Fig. 94, Ground Stud Location

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f548363

Fig. 95, Ground Stud with the Nut Removed

20.3 Coat the ground stud and nut with red insulating epoxy. See Fig. 96.

09/27/2023

Page 54

f548364

Fig. 96, Ground Stud Coated with Red insulating Epoxy

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October 2023
SF675 A-C

20.4 Route the harness from the ground stud to the hood along existing harness in the path shown in
Fig. 97, Fig. 98, and Fig. 99. Secure the harness with zip ties as needed.

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f548366

Fig. 98, Routing of the Harness (TSU CT44FRT035)
Along the Frame Rail Towards the Hood

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f548365

Fig. 97, Routing of the Harness (TSU CT44FRT035)
Beginning at the Ground Stud
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f548367

Fig. 99, Routing of the Harness (TSU CT44FRT035)
Along the Existing Hood Harness Towards the Hood

Page 55

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SF675 A-C

20.5 Continue routing the harness along the headlight harness on the inside of the hood, as shown in
Fig. 100. Secure the harness with zip ties as needed.
20.6 From the split to the driver-side marker, continue routing the harness along the top of the hood, towards the passenger-side marker, as shown in Fig. 101, Fig. 102, and Fig. 103. Secure with zip ties
as needed.

1

B

A

B

C

A

09/28/2023

A.
B.
C.
1.

f548368

From the ground stud.
To driver-side marker light.
To passenger-side marker light.
Driver-Side Marker Light

Fig. 100, Routing of the Harness (TSU CT44FRT035)
Along the Driver’s Side of the Hood

Page 56

09/28/2023

f548369

A. From split to driver-side marker light.
B. To passenger-side marker light.
Fig. 101, Routing of the Harness (TSU CT44FRT035)
from the Split to the Driver-Side Marker Along the Top
of the Hood to Passenger-Side Marker

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Field Service Campaign

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SF675 A-C

1

A

A

09/28/2023

f548370

A. To passenger-side marker light.
Fig. 102, Routing of the Harness (TSU CT44FRT035)
Along the Top of the Hood to the Passenger-Side
Marker

Page 57

09/28/2023

f548371

A. To driver-side marker light.
1. Passenger-Side Marker Light
Fig. 103, Routing of the Harness (TSU CT44FRT035) to
the Passenger-Side Marker

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20.7 In the existing marker light harness on the driver’s side, in the approximate location shown in
Fig. 104, cut the fabric tape to expose a section of the wiring. See Fig. 105.
1

A

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f548372

A. Cut the fabric tape to expose a section of the wiring at this location.

1. Driver-Side Marker Light
Fig. 104, Location to Expose the Wiring in the Existing
Marker Light Harness (driver’s side)

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f548373

Two black wires shown. Some configurations may
only have one black wire.
Fig. 105, Section of the Wiring Exposed in the Existing
Marker Light Harness (driver’s side)

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SF675 A-C

20.8 Cut the black wire(s) that were exposed, as shown in Fig. 106.
NOTE: Depending on the marker light configuration, there may be only one black wire. Two black wires are
shown in this installation.
20.9 The black wire(s) that were cut leading away from the driver-side marker light will no longer be used
and need to be dead headed. Heat shrink the ends as shown in Fig. 107.

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f548375

Fig. 107, Dead Head the Black Wire(s) that Lead Away
from the Marker Light with Heat Shrink
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f548374

Fig. 106, Black Wire(s) Leading to the Driver-Side
Marker Cut

Page 59

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SF675 A-C
20.10 Splice the cut black wire(s) that lead to the driver-side marker light. to to the black wire from harness
(TSU CT44FRT035) that was routed to this location. See Fig. 108
NOTE: For wire splices, use one of the methods outlined in Section 54.00, Subjects 100 and 110 of the
47X & 49X Workshop Manual.
20.11 Wrap the splice, the dead-headed wires, and any exposed wiring with fabric tape. Secure the harness
and any excess wiring with zip ties as needed. See Fig. 109.

09/28/2023
09/28/2023

f548376

f548377

Fig. 109, Securing the Harness Near the Marker with
Zip Ties

Fig. 108, Splicing the Black Wire(s) from the Marker
Light to the Black Wire from the Harness (TSU CT44FRT035)

20.12 To complete the splice connection near the passenger-side marker light, follow the same procedures
as outlined in substeps 20.7 through 20.11.

Page 60

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SF675 A-C
21. Connect the battery cables.
22. Follow the substeps to set the parameters in the XMC2 and SSAM. See Table 3.
Module